62 results about "Interference distribution" patented technology

In a radio network a determination is made whether to implement cyclical delay diversity (CDD) for a radio frequency connection involving a radio base station (26) and a wireless terminal (30). The determination whether to implement cyclical delay diversity (CDD) is made in accordance with interference distribution at the wireless terminal (30), as such interference distribution is measured or otherwise perceived. When a determination is made to implement the cyclical delay diversity for the connection, plural transmit antennas (38) of the radio base station (26) are employed to implement the cyclical delay diversity for the connection. One or more indications of the interference distribution may be received and used to make the determination. The indication(s) of interference distribution can take the form of information received from the wireless terminal, and / or the form of frequency reuse plan information for interfering cells. For example, the determination to implement the cyclical delay diversity can be made affirmatively if the frequency reuse for interfering cells is above a predetermined frequency reuse number. In differing embodiments, either the radio base station (26) or the wireless terminal (30) can make the CDD implementation determination.

Disclosed is a method for interference distribution. The method comprises: a reconfiguration management node of a secondary system acquires or receives information of an idle spectrum resource and information on the total interference value that the secondary system is permitted to generate on the idle spectrum resource; and, the reconfiguration management node calculates, on the basis of the information on the total interference value that the secondary system is permitted to generate, a transmission power for a secondary user equipment that is subordinate to the reconfiguration management node. While at the same time, also disclosed are a system, management node, database, and storage medium for interference distribution.

The invention provides a self-adaptive disturbing signal processing recognition device of a wide-domain all-fibre disturbance sensor network system, which is mainly used for the pipeline monitoring of safety detection and monitoring, etc. of pipelines delivering various risky or high-value chemical products. Based on an all-fibre reflection interference distribution type sensor circuit system, a method which adopts wavelet denoising and ICA signal separation and characteristic extraction is provided, with the realization process of two contents: on the one hand, in a data signal register, mixed signals carried with various noises and disturbance information are read out, the signal pre-processing and separation thereof are carried out, the characteristic value is then extracted, a KNN recognition module is entered finally, and the type and property of the input signal are recognized; on the other hand, when the signals to be recognized are processed and recognized, the signals are input into a recognized signal register, after the recognized result analysis of the signals to be input is completed, a main controller decides whether to carry out the manpower interception to the input signals so as to determine the type and property of the input signals further.

The invention discloses an interference management strategy under a cognitive two-layer heterogeneous network system, specifically refers to a cell regionalized interference management strategy in a cognitive heterogeneous network, and relates to the technical field of wireless communication interference management. It includes: in a cell covered by a two-layer heterogeneous network, the macro cell user (MU) is the main user, and the femto cell user (FU) is the secondary user. Based on the change of the location of the MU, the interference of the FU will be corresponding The area where the MU is located is judged by the channel information, and then according to the different characteristics of the interference distribution in different areas, the interference of the FU and the interference of the MU are respectively aligned to reduce the interference of the FU and the MU. The interference alignment is implemented through the precoding design of each transmitting end of the FU and MU. To provide a higher rate for the next generation of wireless cellular networks, especially in the case of scarce frequency band resources, how to use idle frequency band resources and opportunistically access idle frequency bands to improve spectrum utilization provides a solid technical and material foundation.

The invention discloses a method for controlling the anti-interference distribution shape of styrene bulk polymerization based on a disturbance observer, comprising: obtaining a parameterized model of the polymer according to the elementary reaction in the styrene bulk polymerization reaction; The particle size distribution function output by the system is approximated, and the weight vector at the corresponding time is calculated. Based on the input and output data pairs, the state space model between the weight vector and the control input is established by using the subspace identification method; according to the state space model, the existence of interference is also considered In this case, design a PI controller and a disturbance observer respectively to realize the estimation of the unknown disturbance and the effective control of the output distribution function; combined with the Lyapunov stability analysis method, the corresponding controller gain and observer gain are obtained by solving, and the completion For the anti-interference control of the styrene bulk polymerization process, the invention can provide reliable anti-interference performance and improve the stability of the styrene bulk polymerization reaction process.

The invention provides a heterogeneous cellular network base station deployment method based on a Poisson cluster process. The method comprises the following steps: on the basis of a random geometry theory, according to a hypothetical system model and adopting an instantaneous SINR cell selection mechanism as a cell selection mechanism of a user, deducing an SINR model based on the Poisson cluster process; carrying out analysis and inference on an interference model of a multi-layer heterogeneous cellular network by utilizing characteristics of the Poisson cluster process and a probability generation function thereof to obtain an interference distribution model; with the SINR model and the interference distribution model being combined, deducing a coverage probability model of the multi-layer heterogeneous cellular network; and carrying out simulated comparison and analysis on difference of coverage probabilities of the Poisson cluster process and a Poisson point process. The method is much closer to real communication scenes, is larger in coverage probability, can analyze coverage probability and throughput capacity better, and is of great importance in study of the heterogeneous cellular network in the future.

The invention belongs to the technical field of ultra-dense heterogeneous cellular network user access, discloses an ultra-dense heterogeneous cellular network user access method that separates coverage and data planes, and establishes a microcellular base station system model based on a Poisson cluster process; users can be accessed by Multiple micro base stations distributed around the same hotspot cooperate to access services; establish a macro base station system model based on the Poisson point process; on the premise that the macro base station is mainly responsible for completing the coverage function, and the micro base station is responsible for high data rate transmission, respectively deduce the macro base station Station users and micro base station users receive SINR distribution model and interference distribution model; use SINR distribution model and known distance distribution model to derive the average achievable rate when users in the network are served by different types of base stations; derive Laplace transform of interference distribution model reliable closed-form upper and lower bounds for . It can be found through numerical simulation results in the present invention that the proposed method can obtain a higher data rate.

The invention discloses a method for resisting an attack deep neural network based on a frequency band, and the method comprises the steps: firstly obtaining a frequency band space which comprises theanti-interference of frequency band pairs in N directions, wherein the anti-interference of frequency band pairs in each direction comprises the anti-interference distribution of frequency band pairswith M wavelengths, the anti-interference distribution of each frequency band pair is a waveform containing alternating activation and inhibition, and gradient signals are filled between wave crestsand wave troughs of each frequency band pair; respectively adding the frequency band pair anti-interference distribution and the original image to obtain an anti-attack sample, inputting the anti-attack sample into the attacked deep neural network, taking the anti-attack sample corresponding to the minimum value of the prediction result score as an optimal anti-attack sample, and attacking the attacked deep neural network. According to the method, the waveform containing alternate activation and suppression is adopted as anti-interference distribution, so the sensitivity of the network to an anti-attack sample is effectively improved, the anti-attack sample can be easily measured by the deep neural network, the original signals are confused, and the deep neural network is enabled to predict an error result.

The invention discloses an interference allocation method, comprising: a reconfiguration management node of a secondary system acquires or receives idle spectrum resource information, and the total interference value information that the secondary system is allowed to generate on idle spectrum resources; The reconfiguration management node calculates transmit power for the secondary user equipment subordinate to the reconfiguration management node according to the total interference value information that the secondary system is allowed to generate. The invention also discloses an interference distribution system, a reconfiguration management node and a database at the same time. The invention can realize the secondary system to flexibly configure the transmission power between devices within the range of the allocated total interference quota, and the configuration time delay is controllable.